This is a very common idiom. Links are used almost 'in passing' when mentioning various
entities, eg. people, places, movies. Often the link is to a homepage or mailbox of the
named entity; sometimes it is to a page whose main topic is that entity.

What is missing?

Nothing in the above markup tells us that the topic of the first page is the entity that
the 2nd page is the homepage of. A fancier hyperlinking solution might allow us to be more explicit,
so that we could determine mechanically the things that a human would learn from reading the above
HTML paragraph.